Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d72dee5e45b14e5…

MALICIOUS

PDF

14.5 KB Created: 2019-05-02 01:19:40 +01:00 Authoring application: mPDF 5.7
MD5: 336c813c3a2d2e3e4780afeccc13d773 SHA-1: e9986def69e7759ebc07f835038566d354fab08e SHA-256: 8d72dee5e45b14e52335098164227a6682d7013953a92a58a4f238d20876e8dc
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious. While the specific URLs appear benign, the overall structure and heuristic firings strongly suggest a malicious intent to distribute harmful content or manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9200

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://muicuiu.dumb1.com/4a09a08a04a08a06/The-Books-of-Fell-Fell-1-3-by-M-E-Kerr.pdf
    • http://muicuiu.dumb1.com/1a00a09a09a01a01a09/Novels-by-Cornelia-Funke-Inkworld-Books-the-Thief-Lord-Inkheart-Trilogy-Inkspell-Inkdeath-Igraine-the-Brave-When-Santa-Fell-to-Earth-by-Books-LLC.pdf
    • http://muicuiu.dumb1.com/2a08a04a01a06a09/The-Boy-Who-Fell-Out-of-the-Sky-by-Ken-Dornstein.pdf
    • http://muicuiu.dumb1.com/1a00a02a02a07a04a09/As-the-Ash-Fell-by-A-J-Powers.pdf
    • http://muicuiu.dumb1.com/1a00a01a08a03a07/He-Fell-in-Love-with-His-Wife-by-E-P-Roe.pdf
    • http://muicuiu.dumb1.com/3a04a07a03a01a02/How-I-Fell-for-the-Player-by-BrittanyLeigh8.pdf
    • http://muicuiu.dumb1.com/1a07a04a07a01/After-Things-Fell-Apart-by-Ron-Goulart.pdf
    • http://muicuiu.dumb1.com/1a00a02a02a08a01a03/Fell-Cargo-by-Dan-Abnett.pdf
    • http://muicuiu.dumb1.com/4a01a05a09a01a08/Since-We-Fell-by-Dennis-Lehane.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a07a08a05/Beyond-the-Fell-Wall-by-Richard-Skelton.pdf
    • http://muicuiu.dumb1.com/3a07a07a04a02a05/The-Man-Who-Fell-to-Earth-by-Walter-Tevis.pdf
    • http://muicuiu.dumb1.com/1a00a02a02a06a08a09/The-Year-She-Fell-by-Alicia-Rasley.pdf
    • http://muicuiu.dumb1.com/3a08a05a07a06a05/The-Woman-Who-Fell-from-the-Sky-Poems-by-Joy-Harjo.pdf
    • http://muicuiu.dumb1.com/3a08a07a06a09a08/When-Heaven-Fell-by-William-Barton.pdf
    • http://muicuiu.dumb1.com/3a07a05a06a09a03/The-Man-Who-Fell-to-Earth-by-Walter-Tevis.pdf
    • http://muicuiu.dumb1.com/4a05a05a01a08a02/Fell-of-Dark-by-Reginald-Hill.pdf
    • http://muicuiu.dumb1.com/4a00a08a06a08a01/My-EX-Fell-in-Love-by-Shubham-Choudhary.pdf
    • http://muicuiu.dumb1.com/3a01a02a07a02a02/The-Cow-Who-Fell-in-the-Canal-by-Phyllis-Krasilovsky.pdf
    • http://muicuiu.dumb1.com/4a07a02a05a03a03/When-He-Fell-For-Me-by-Ciara-Jamie-Garcia.pdf
    • http://muicuiu.dumb1.com/3a08a06a08a02a04/When-the-People-Fell-by-Cordwainer-Smith.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a07a08a05/Bey

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